By-elections to the 6th Canadian Parliament were held to elect members of the House of Commons of Canada between the 1887 federal election and the 1891 federal election. The Conservative Party of Canada led a majority government for the 6th Canadian Parliament.

The list includes Ministerial by-elections which occurred due to the requirement that Members of Parliament recontest their seats upon being appointed to Cabinet. These by-elections were almost always uncontested. This requirement was abolished in 1931. By-election Date Incumbent Party Winner Party Cause RetainedVictoria SouthDecember 18, 1890Adam Hudspeth    Conservative Charles Fairbairn    Liberal-Conservative DeathYesNapiervilleDecember 9, 1890Louis Sainte-Marie    Liberal François-Xavier Paradis    Conservative Resigned to enter provincial politics in Quebec.NoKentJuly 31, 1890Pierre-Amand Landry    Conservative Édouard H. Léger    Conservative Appointed a judge in the county court of Westmorland and Kent.YesMontmorencyJuly 25, 1890Charles Langelier    Liberal Louis-Georges Desjardins    Conservative Resignation to enter provincial politics in Quebec.NoNew WestminsterJune 19, 1890Donald Chisholm    Conservative Gordon Edward Corbould     ConservativeDeathYesLincoln and NiagaraMay 23, 1890John Charles Rykert    Conservative John Charles Rykert    ConservativeResignation to recontest over charges of corruption.YesOttawa (City of) (electoral district)April 26, 1890William Goodhue Perley    Conservative Charles Herbert Mackintosh    ConservativeDeathYesHaldimandFebruary 20, 1890Charles Wesley Colter    Liberal Walter Humphries Montague    ConservativeElection declared void.NoStansteadDecember 18, 1889Charles Carroll Colby    Liberal-Conservative Charles Carroll Colby    Liberal-ConservativeRecontested upon appointment as President of the Privy Council.YesVictoriaOctober 28, 1889Edgar Crow Baker    ConservativeThomas Earle    ConservativeResignation.YesComptonMay 16, 1889John Henry Pope    Liberal-ConservativeRufus Henry Pope    ConservativeDeathYesHaldimandJanuary 30, 1889Walter Humphries Montague    ConservativeCharles Wesley Colter    Liberal Election declared void.NoProvencherJanuary 24, 1889Joseph Royal    ConservativeAlphonse Alfred Clément Larivière    ConservativeAppointed Lieutenant-Governor of the North West Territories.YesJolietteJanuary 16, 1889Édouard Guilbault    ConservativeHilaire Neveu    NationalistElection declared void.NoCumberlandDecember 26, 1888Arthur Rupert Dickey    ConservativeArthur Rupert Dickey    Conservative Election declared void.YesCaribooNovember 22, 1888James Reid    Liberal-Conservative Francis Stillman Barnard    Conservative Called to the Senate.YesNorthumberland EastNovember 21, 1888Edward Cochrane    Conservative Edward Cochrane    Conservative Election declared void.YesShelburneOctober 22, 1888John Wimburne Laurie    Conservative John Wimburne Laurie    Conservative Election declared void.YesCardwellOctober 3, 1888Thomas White    Conservative Robert Smeaton White    Conservative DeathYesMontreal EastSeptember 26, 1888Charles-Joseph Coursol    Conservative Alphonse-Télesphore Lépine    Independent Conservative DeathNoAssiniboia EastSeptember 12, 1888William Dell Perley    Conservative Edgar Dewdney    Conservative Called to the SenateYesHaltonAugust 22, 1888John Waldie    Conservative David Henderson    Conservative Election declared void.NoLanark SouthAugust 15, 1888John Graham Haggart    Liberal John Graham Haggart    Conservative Recontested upon appointment as Postmaster-General.YesColchesterAugust 15, 1888Archibald McLelan    Conservative Adams George Archibald    Liberal-Conservative Appointed Lieutenant-Governor of Nova Scotia.YesNicoletJuly 17, 1888Athanase Gaudet    Nationalist ConservativeFabien Boisvert    Independent Conservative DeathNoCumberlandJuly 13, 1888Charles Tupper    Conservative Arthur Rupert Dickey    Conservative Appointed Canadian High Commissioner to the United Kingdom.YesPictouJune 18, 1888Charles Hibbert Tupper    Conservative Charles Hibbert Tupper    Conservative Recontested upon appointment as Minister of Marine and Fisheries.YesRussellMay 7, 1888William C. Edwards    Liberal William C. Edwards    Liberal Election declared void.YesKentMay 2, 1888Archibald Campbell    Liberal Archibald Campbell    Liberal Election declared void.YesL'AssomptionApril 3, 1888Joseph Gauthier    Liberal Joseph Gauthier    Liberal Election declared void.YesMissisquoiMarch 27, 1888George Clayes    Liberal Daniel Bishop Meigs    Liberal DeathYesPrince EdwardMarch 19, 1888John Milton Platt    Liberal John Milton Platt    Liberal Election declared void.YesHastings WestMarch 17, 1888Alexander Robertson    Conservative Henry Corby, Jr.    Conservative DeathYesMiddlesex WestMarch 10, 1888William Frederick Roome    Conservative William Frederick Roome    Conservative Election declared void.YesHaltonFebruary 7, 1888John Waldie    Liberal David Henderson    Conservative Election declared void.NoCarletonFebruary 1, 1888John A. Macdonald    Liberal-Conservative George Lemuel Dickinson    Conservative Chose to sit for Kingston.YesVictoriaJanuary 23, 1888Noah Shakespeare    Conservative Edward Gawler Prior    Conservative Appointed Postmaster of Victoria.YesQueen'sJanuary 18, 1888George Gerald King    Liberal George Frederick Baird    Conservative Election declared void.NoDorchesterJanuary 7, 1888Henri Jules Juchereau Duchesnay    Nationalist Conservative Honoré-Julien-Jean-Baptiste Chouinard    Conservative DeathNoNorthumberland EastDecember 22, 1887Albert Mallory    Liberal Edward Cochrane    Conservative Election declared void.NoShelburneDecember 15, 1887Thomas Robertson    Liberal John Wimburne Laurie    Conservative Election declared void.NoYarmouthDecember 15, 1887John Lovitt    Liberal John Lovitt    Liberal Election declared void.YesVictoriaNovember 21, 1887Charles James Campbell    Conservative John Archibald McDonald    Liberal Election declared void.NoHaldimandNovember 12, 1887Walter Humphries Montague    Conservative Walter Humphries Montague    Conservative Election declared void.YesCumberlandNovember 9, 1887Charles Tupper    Conservative Charles Tupper    Conservative Election declared void.YesColchesterOctober 27, 1887Archibald McLelan    Conservative Archibald McLelan    Conservative Election declared void.YesBruce WestOctober 19, 1887Edward Blake    Liberal James Rowand    Liberal Chose to sit for Durham West.YesRichelieuOctober 18, 1887Jean-Baptiste Labelle    Conservative Joseph-Aimé Massue    Conservative DeathYesCharlevoixSeptember 28, 1887Simon-Xavier Cimon    Conservative Simon Cimon    Conservative DeathYesRenfrew SouthAugust 2, 1887Robert Campbell    Liberal John Ferguson    IndependentDeathNoDigbyJuly 16, 1887John Campbell    Conservative Herbert Ladd Jones    Conservative DeathYesRestigoucheMay 21, 1887Robert Moffat    Conservative George Moffat Jr.    Conservative DeathYesVictoria SouthApril 20, 1887Adam Hudspeth    Conservative Adam Hudspeth    Liberal-Conservative Seeks re-election due to holding the office of revising officer.YesBruce EastApril 2, 1887Henry Cargill    Conservative Henry Cargill    Conservative Seeks re-election due to holding the position of postmaster.Yes

See also List of federal by-elections in Canada

Sources Parliament of Canada–Elected in By-Elections